Create slimy, gooey worms—instantly. The moment the worm goo is added to the activator solution, worms magically appear. You can make fat worms, skinny worms, short worms, long worms, straight worms, zigzag worms, worm eggs, color-changing worms, or even a worm ring or bracelet. The secret is in the awesome world of polymer science.Makes more than 40 feet of worms. It's hands-on chemistry fun.Science Principles explored in this kit: chemistryAges 8 and up